package com.zzyl.framework.config;

import com.zzyl.common.utils.Threads;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * 线程池配置
 * @author ruoyi
 **/
@Configuration
public class ThreadPoolConfig {
    // 核心线程池大小
    private int corePoolSize=50;
    
    // 最大可创建的线程数
    private int maxPoolSize=200;
    
    // 队列最大长度
    private int queueCapacity=1000;
    
    // 线程池维护线程所允许的空闲时间
    private int keepAliveSeconds=300;
    
    /**
     * spring中提供的线程池对象：相比传统的线程池做了封装，特点，改线程池对象可以放入到容器中；随时取出来使用；另外在spring很多业务中可以与内部机制一起使用
     * @return
     */
    @Bean(name = "threadPoolTaskExecutor")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
        ThreadPoolTaskExecutor executor=new ThreadPoolTaskExecutor();
        executor.setMaxPoolSize(maxPoolSize);
        executor.setCorePoolSize(corePoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setKeepAliveSeconds(keepAliveSeconds);
        // 线程池对拒绝任务(无线程可用)的处理策略
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        return executor;
    }
    
    /**
     * 传统的线程池：执行周期性或定时任务
     */
    @Bean(name = "scheduledExecutorService")
    protected ScheduledExecutorService scheduledExecutorService() {
        return new ScheduledThreadPoolExecutor(corePoolSize,new BasicThreadFactory.Builder().namingPattern("schedule-pool-%d")
                                                                                            .daemon(true)
                                                                                            .build(),new ThreadPoolExecutor.CallerRunsPolicy()) {
            @Override
            protected void afterExecute(Runnable r,Throwable t) {
                super.afterExecute(r,t);
                Threads.printException(r,t);
            }
        };
    }
}
